The beam has only one feedpoint with 50 Ohm and has an
open-sleeve element for 12 m

12 m: 4,39
dBd 11,5 dB F/B

17 m: 4,15 dBd 11 dB F/B

The Yagi built by

Marcos, PY2MR

The Yagi built by

Nelu, YO9DL

The 2-El.-Open-Sleeve-Yagi built
by

Phil, ON4TA

The measurement of the SWR by Phil, ON4TA.

He reports no tuning on 17 m, resonance as
expected. The dip on 12 m was a little bit to high and can be shifted
with the 12-m-open-sleeve-radiator.

The scheme of the beam with the currents for 24,9 MHz

Element lengths for the two bands, keep the outer tubes 15
cm longer for the overlap. The open-sleeve-element for 12 m and the reflectors
can be mounted direct above the boom (metallic connection), but do not use big
metallic brackets. This can detune the beam!